An unapologetic New Zealand First leader Winston Peters has stepped up his attack on Chinese migration claiming it is going to cost an extra $1 billion in superannuation payments due to a policy of allowing elderly parental reunion.

"Cut out the crap and face the facts, we are in trouble here and have to pay for it," he told about 130 people at a Grey Power meeting.

Peters' latest attack followed last week's description at another Grey Power meeting of Auckland as a "super-city of sin", mostly as a result of Chinese migration.

He was criticised for being racist in the earlier speech but waving a newspaper today he said former Fonterra chairman Sir Henry van der Heyden had yesterday said the Chinese could not be trusted - and he wasn't called a racist.

Peters said part of the problem was China's One Child policy and New Zealand's liberal immigration policy allowing parental reunions.

"When a couple come from China to New Zealand, as they have in the last 15 years, or just one person comes, and brings a wife and child, they can also apply to bring both parents," he said.

In the last year 50 per cent of all the family reunifications had been Chinese.

The consequence was that "tens of thousands" of Chinese who have been here for barely five to 10 years will all qualify for national super.

"You can qualify at the end of 10 years having never paid one cent of tax or never worked one day," he said.

They are not required to contribute anything.

"When all of these people receive super, their bill alone will be $1 billion and all the while this audience... is being told we've got to put up the retirement age."

Peters quoted several Chinese people here claiming they said this superannuation burden will end up as a liability to New Zealand, as well as being a health, housing and socio economic problem.

New Zealand First will go to the elections next year calling for a new policy calling for migrants coming here for 10 years, and paying tax, getting 25 per cent of the superannuation. People with 20 years in New Zealand would get half and 40 years residency would qualify for the full amount.

Peter's assailed the acceptance that Auckland would have an extra million people by 2040.

"This is madness; Auckland cannot cope with its present population...

"Auckland needs time to breathe, to get on top of its problems."

Peters said most of the new people will come from aboard and they were pushing up house prices.

Go to any auction in the city, he says, and "the place is wall to wall with foreign buyers bidding prices through the roof."